Specifications

TM9-2330-384-14&P
5-8. VAPORINTEGRITYTEST(Con't).
(15)
Return tank and piping system to normal atmospheric pressure by opening rear sump drain (2) and vapor vent
valve (30).
29
30
2
16
(16)
Repair vapor vent valve (para 4-76), and restart
test from step 1.
0
(17)
With emergency valve (29) still open, open vapor
vent valve (30) and repressurize tank, if
necessary, bringing pressure up to 18.0 inches
t 0.5 inch wc (see step 2).
(18) If
pressure does not drop, go to step 26. If
pressure drops, go to step 19.
(19) Close emergency valve (29). Repressurize tank
to 18.0 inches t 0.5 inch wc per step 2, if
necessary. If 18.0 inches :t 0.5 wc pressure is
maintained once control shutoff valve is closed,
go to step 20. If pressure drops when shutoff
valve (16) is closed, go to step 23.
(20)
Visually locate the leak in discharge piping system
(check discharge valve, piping, sump drain, and
precheck valve circuit) (Chapter4, Section XIV).
5-34 Change1